RFIC ARCHITECTURE FOR MULTI-STREAM REMOTE RADIO HEAD APPLICATION
First Claim
1. A remote radio head (RRH) for a wireless communication system, comprising:
- a first integrated circuit (IC) chip that comprises multiple functional blocks, wherein the multiple functional blocks include at least a processing unit, a digital-to-analog converter (DAC), and an analog-to-digital converter (ADC); and
a second IC chip that comprises at least an up-converter and a down-converter, wherein the up-converter is configured to convert an intermediate frequency (IF) signal received from the first IC chip to radio frequency (RF) domain, and wherein the down-converter is configured to convert an RF signal received from an antenna to an IF signal to be sent to the first IC chip.
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Accused Products
Abstract
One embodiment of the present invention provides a remote radio head (RRH) for a wireless communication system. The RRH includes a first integrated circuit (IC) chip that comprises multiple functional blocks and a second IC chip that comprises at least an up-converter and a down-converter. The multiple functional blocks include at least a processing unit, a digital-to-analog converter (DAC), and an analog-to-digital converter (ADC). The up-converter is configured to convert an intermediate frequency (IF) signal received from the first IC chip to the radio frequency (RF) domain, and the down-converter is configured to convert an RF signal received from an antenna to an IF signal to be sent to the first IC chip.
32 Citations
21 Claims
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1. A remote radio head (RRH) for a wireless communication system, comprising:
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a first integrated circuit (IC) chip that comprises multiple functional blocks, wherein the multiple functional blocks include at least a processing unit, a digital-to-analog converter (DAC), and an analog-to-digital converter (ADC); and a second IC chip that comprises at least an up-converter and a down-converter, wherein the up-converter is configured to convert an intermediate frequency (IF) signal received from the first IC chip to radio frequency (RF) domain, and wherein the down-converter is configured to convert an RF signal received from an antenna to an IF signal to be sent to the first IC chip. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method for transmitting data for wireless communication using a remote radio head (RRH), the method comprising:
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receiving, by the RRH from a base station, baseband data that includes an in-phase data stream and a quadrature (Q) data stream; digitally modulating the I data stream and the Q data stream into a real intermediate frequency (IF) data stream; converting the real IF data stream to an analog IF signal; frequency up-converting the analog IF signal to an analog RF signal; and transmitting the converted RF signal. - View Dependent Claims (9, 10, 11, 12)
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13. A method for receiving data for wireless communication using a remote radio head (RRH), the method comprising:
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receiving, by the RRH from an antenna, a radio frequency (RF) signal; frequency down-converting the RF signal to an intermediate frequency (IF) signal; converting the IF signal to a digital IF data stream; digitally demodulating the IF data stream to an in-phase (I) baseband data stream and a quadrature (Q) baseband data stream; and sending the I and Q baseband data streams to a base station. - View Dependent Claims (14, 15, 16, 17)
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18. A radio frequency integrated circuit (RFIC) chip implemented in a remote radio head (RRH), wherein the RFIC chip is configured to communicate with a base station via a second IC chip, the RFIC chip comprising:
at least an up-converter and a down-converter, wherein the up-converter is configured to convert an intermediate frequency (IF) signal received from the second IC chip to radio frequency (RF) domain, and wherein the down-converter is configured to convert an RF signal received from an antenna to an IF signal to be sent to the second IC chip. - View Dependent Claims (19, 20, 21)
Specification